<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
      <form action="" method="get">

        <input id="user_n" type="text" name="账号" placeholder="请输入用户名">
        <br>
        <input type="password" name="密码" value="123456">
        <br>
        <input type="checkbox" id="male">男
        <input type="checkbox" id="female">女

        <select id="fruit">
            <option value="001">香蕉</option>
            <option value="002">苹果</option>
            <option value="003">葡萄</option>
            <option value="004">柠檬</option>
            <option value="005">柚子</option>
        </select>
        <br>
        <button type="button">不要点我</button>
        <button type="submit">提交</button>
    </form>

</body>
</html>